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"All-hit" ref. area cover standard for 2003 (Adj. Means weighted by °k of Affected Area) = 24.6°h. 90 percent of 2003 ref. area cover standard = 0.9 x 24.6 = 22.2% • 'Percent "all-hit" cover (absolute) by herbaceous species as corrected for "allowable" annual and biennial cover (i.e. no more than 10 percent relative cover allowed, See CDMG 1995, 1.IV.A.). "Ratio of relative "first-hit" cover of herbaceous species to relative "all-hft" cover of herbaceous speces ° Seneca II-W extended reference area values from data collected in 2003 ° Seneca II-WS extended reference area values from data collected in 1997 As can be seen in Figure 1, the allowable total "all hit" herbaceous cover observed in the 2001 reclaimed areas sampled nearly equaled exceeded 90 percent of the standard set by the reference areas. The 90% confidence limit well-exceeded 90 percent of the "allowable" cover pertormance standard (Figure 1). Inasmuch as the 2001 reclaimed areas at the Yoast Mine were only in their second season of growth in 2003, the status of allowable cover nearly meeting the standard is encouraging. Herbaceous Production • Observed production values and derivation of the 2003 herbaceous production standard are compiled /documented in the table below: Yoast 2003 Using the Seneca II-W Phase III Herbaceous Production Standard Vegetation Type Mean Herbaceous Production (Ib/ac) % of Aff. Area Sagebrush/Snowberry° 1768.3 38.0 Mountain Brush 1589.9 37.3 Aspen Woodland° 2234.0 7.0 Steep Mountain Brush 748 13.9 Alkali Sage/West Whtgrs. 1,411 3.8 YOAST 2001 Reclamation 2057.4 NA Herbaceous production performance standard (weighted by percent of affected area) = 1586 Ib/ac. 90 percent of performance standard = 0.9 x 1579 = 1427 Ib/ac ° Seneca II-W extended reference area values from data collected in 2003 • ° Seneca !I-WS extended reference area values from data collected in 1997; it is likely that values from 2003 would have somewhat lower, so the calculated standard is probably somewhat high.